Todomomo

Momo gets more jealous. She feels like she might lose him if she doesn't get too jealous.

Kirimina

They don't get jealous because one of them is an alien that secretes acid, and the other is too manly to cheat.

Miruhawks

Rumi is just feisty. I doubt she'd get jealous but it probably looks like it. Hawks definitely gets jealous around girls and guys because Rumi is that amazing-

Iidamei

Mei gets jealous.

Kamijirou

Denki gets jealous

Dabi x Toga

Lmao no one wants them, no need to be jealous

Nejitama

Tam tam gets jealous cuz he thinks Nejire deserves better. But like, he is better and Nejire isn't going anywhere, don't worry baby.

Mt.Kamui

With all the fangirls and fanboys they both have, its both